code: def start(self):
      print(
          "Starting escape test flow with interpreter %s"
          % sys.executable
      )
      self.next(self.native_exec, self.escape_exec)
  
file_path: metaflow/test/env_escape/example.py
imports: import os
  import sys
  from metaflow import FlowSpec, step, conda
label_desc: Use image node_id 1 for calling the EscapeTest obj's underlying member method code with example usage: obj.start() without return types